checkpoint: pre-split branch cleanup

tests/components/shared/unified-shell-hide-closed-contract.test.ts

@@ -0,0 +1,11 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+
+test('UnifiedShell clears selected closed epic when hideClosed is enabled', async () => {
+  const file = await fs.readFile(path.join(process.cwd(), 'src/components/shared/unified-shell.tsx'), 'utf8');
+
+  assert.ok(file.includes('if (epic.status === \'closed\' || epic.status === \'tombstone\')'), 'expected closed epic guard');
+  assert.ok(file.includes('setEpicId(null);'), 'expected selected epic reset');
+});